import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'

Vue.use(VueRouter)

const routes = [
  {path:'/',redirect:'/login'},
  {path:'/login',component: Login},
  {path:'/home',component: Home}
]

const router = new VueRouter({
  routes
})

//挂载路由守卫
router.beforeEach((to,from,next)=>{
  //to要访问的路径
  //from代表从哪个路径过来
  //next是一个函数，表示放行：next()放行；next('/Login')强制跳转
  if(to.path === '/login') return next()
  //获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login')
  next()
})

export default router
